package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class LoginDemo {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(),"欢迎登录","登录");
        try (
                Connection connection = DBUtil.getConnection()
        ){
            Statement statement = connection.createStatement();
            String sql = "SELECT id ,username , password,nickname,age " +
                         "FROM userinfo  "+
                         "WHERE username = '"+userInfo.getUsername()+"' AND password = '"+userInfo.getPassword()+"'";
            ResultSet rs = statement.executeQuery(sql);
            System.out.println("请输入用户名和密码：");
            if (rs.next()){
                System.out.println("登录成功,欢迎你"+rs.getString("nickname"));
            }else {
                System.out.println("登录失败，用户名或密码错误");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
